From 1963 to 1966, Nguyen was married to Dr. Thomas Gaspar Morell, a psychiatrist, with whom she has a daughter named Fleur (who is married and resides in Canada and works as a makeup artist for films). She met her second husband, Robert Culp, while appearing on his TV show I Spy; they married in 1967 but divorced in 1970. (Nguyen and Culp were set to appear as co-hosts of the second episode of the notorious TV series Turn-On in 1969, but the show was canceled after just one airing.)[2]